Results 11 to 20 of about 30,798 (166)
Wildlife Letters, EarlyView.Using a 3‐year, broad‐scale camera‐trap network in western Kansas, we tested whether coyotes and American badgers exhibit spatiotemporal patterns consistent with coordinated hunting. Despite high diel activity overlap, detection‐conditioned co‐detections occurred far less frequently than expected under independence, and short‐term temporal sequencing ...
Ty J. Werdel +3 more
wiley +1 more source
Wildlife Letters, EarlyView.Using radiotelemetry, we found that the movement and home range of the endangered Sacalia bealei varied significantly across reproductive classes and seasons, with males exhibiting greater movement than females during wet and mating seasons. The species exhibits strong aquatic dependence, favoring deep pools interspaced among riffle‐pool sequences ...
Wing Sing Chan +3 more
wiley +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Human‐driven landscape change, particularly urbanization, is reshaping pollinator communities, yet the functional traits that mediate species persistence remain poorly understood. Dietary specialization is commonly used to predict species vulnerability.
Yan Yang +5 more
wiley +1 more source
Pd(II)触媒を用いるヘテロ付加環化反応の開発と生物活性天然物合成(環境調和型生体・化学物質の創製と応用,プロジェクト研究成果報告) [PDF]
, 2006 この論文は国立情報学研究所の学術雑誌公開支援事業により電子化されまし
平井 美朗
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Zhejiang Daxue xuebao. Lixue ban, 2011 研究了陆生植物美人蕉（Canna indica）和绿萝（Scindapsus aureum）在修复富营养化水体过程中对不同质量浓度Cr(Ⅵ)胁迫的生理生化响应.结果表明，Cr(Ⅵ)胁迫影响植物生长，Cr(Ⅵ)质量浓度为10 mg • L-1时两种植物生长明显受到抑制.Cr(Ⅵ)质量浓度为2 mg • L-1时促进美人蕉及绿萝可溶性蛋白质的合成，提高了美人蕉及绿萝SOD、CAT、POD活性，对两种植物MDA积累无明显影响；当Cr(Ⅵ)质量浓度5 mg • L ...
LIUYing(刘英) +2 more
doaj +1 more source
Chemical constituent and biological activity research of the small polar substances from Vitis thunbergii var. taiwaniana [PDF]
, 2015 小叶山葡萄(Vitisthunbergiivar.taiwaniana)是葡萄科葡萄属植物，主要分布于台湾，本文对小叶山葡萄的化学成分以及其抗氧化、抗炎和抗肿瘤活性进行了研究。 利用大孔吸附树脂、正相硅胶柱色谱、ODS中低压柱色谱、SephadexLH-20凝胶柱色谱、薄层色谱、分析型和制备型高效液相色谱等分离方法，从小叶山葡萄60%乙醇提取部位大孔树脂柱95%乙醇洗脱部位共分得20个单体化合物，通过理化性质的分析比较、核磁共振波谱以及高分辨质谱等对化合物的结构进行了鉴定 ...
姜超
core
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Ecological communities are stressed by rapid and complex anthropogenic changes, threatening the persistence of biotic interactions and ecosystem functioning. Plant–pollinator communities, for instance, undergo structural transformations as a result of land‐use change ...
Erliang Gao +8 more
wiley +1 more source
Shuitu Baochi Xuebao, 2021 土壤酶对森林生态系统生物化学过程有重要作用，能快速反映土壤环境（如养分含量和有效性）的变化。采伐剩余物是林地土壤养分的重要来源，其处理方式会对森林土壤的养分含量和有效性产生影响。为探讨采伐剩余物不同处理方式对杉木幼林土壤酶活性的影响，在福建省三明市格氏栲自然保护区40年生的杉木成熟林采伐迹地上对采伐剩余物进行不同处理（保留RR、火烧RB、去除R）并种植杉木幼林，通过采集0-10，10-20 cm土层土壤，对6种胞外酶活性进行研究。结果表明：（1）采伐剩余物处理4年后，相比保留处理 ...
李啸灵 +4 more
doaj
Selective Isolation of Rare Actinomycetes from Rhizosphere Soil and Identification of Two Novel Strains [PDF]
, 2015 放线菌的次级代谢产物是重要的药物资源，目前已发现的数万种天然抗生素中约70%是由放线菌所产生的。近年来，由于从链霉菌中不断分离得到重复的活性化合物，继而人们逐渐将目光转向稀有放线菌。稀有放线菌种类多样，并且具有某些不同于链霉菌的特殊代谢途径，因而更有可能产生结构新颖、生物活性独特的化合物，具有极大开发潜力。 本文以采自厦门翔安香山、南京中山植物园和玄武湖公园的植物根际土壤作为分离源，采用聚乳酸-明胶（PLA-G）培养基和海藻糖-脯氨酸（YIM212）培养基进行稀有放线菌的选择性分离 ...
黎丹
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When and why to give shorebirds a head start
Conservation Biology, EarlyView.Abstract Headstarting is a translocation technique involving the hatching or rearing of wild eggs or young in captivity and the release of those individuals back to the wild at or before independence. It has been trialed as a conservation intervention for shorebirds over recent decades to improve the population trend of target populations by increasing
Lynda Donaldson +4 more
wiley +1 more source